Polyurethanes made from hydroxy-methyl containing fatty acids or alkyl esters of such fatty acids
US8686057B2 · kind B2 · utility
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17Claims
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Key dates
| Filing date | Oct 24, 2005 |
| Grant date | Apr 1, 2014 |
| Priority date | — |
| Expiry date | Feb 15, 2029 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G2110/0083
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Polyurethane polymers are made from a reaction mixture that contains a polyisocyanate, a hydroxylmethyl-containing fatty acid or ester, and another polyol, polyamine or aminoalcohol. The carboxylic acid or ester group on the hydroxymethyl-containing fatty acid or ester are capable of engaging in a variety of reactions with the polyisocyanate and/or amine or hydroxyl groups present in the reaction mixture. This allows for good quality, high molecular weight polymers to be produced even though the hydroxymethyl-containing fatty acid or ester tends to be a low functionality material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.